If by "Kilted Skirt" you mean one with pleats in the back and aprons in the front like a kilt, then perhaps I can add that a man's kilt will use, on average, 4 yards of double-width fabric. If made from 16oz wool that will weigh in at just around 4 lbs.

I once saw a hostess length skirt made out of 16oz wool. That thing weighed just under 8 pounds. It took two grown men just to lift it.
Even when strapped on as tight as it could go without cutting off circulation the pleats sagged in the back just from their own weight.

Most ladies skirts are made from light weight fabric. Many from 10oz or lighter. The pleats are usually far shallower than for a man's kilt.

It's simply about the weight of the thing.

Most of the ladies skirts that pass though my shop are cut from around 2 to 2.5 yards (double-width) of 10oz fabric. If the skirts final length is around 28 to 30 inches long that's a total weight of right around a pound and a half.